650 seats were contested in 2017 but there might be reduced number of seats in 2020 as a result of boundary changes. The seat boundaries attributed to any election before 2020 is the same as those in 2017. A party winning most seats doesn't necessarily imply that they clinched the government as a result of winning greater number of seats as compared to other parties.

There are 59 seats in Scotland, 40 seats in Wales, 533 seats in England and 18 seats in Northern Ireland. According to the results of the 2017 election, the Conservative seats were reduced from 330 to 318 seats while Labour increased from 229 to 262. The Scottish National Party (SNP) seats reduced from 56 to 35 while Liberal Democrats moved up from 9 to 12 seats. Plaid Cymru also moved up from 3 to 4 seats as Sinn Fenn moved from 4 to 3 seats. The Democratic Unionist Party experienced an increase from 8 to 10 seats while Social Democratic and Labour Party reduced from 3 to 0 seats. Only the Green party had 1 seat as Ulster Unionist Party also moved down from 2 to 0.

If a party is able to attain the key number of seats, they are capable of forming the majority government. An example can be cited in the case of 2015 general election where Tories comfortably won Labour by winning most seats of 326 while Labour won only 232.

In a scenario where any party fails to reach 326 seats, a hung parliament will occur. This happened in 2010 when there was a coalition formed between the Conservatives and the Lib Dems. There are two options when there is no majority, it's either to form a coalition in order to generate a majority or to operate as a minority government.

The result of the 2017 general election in the UK also ended up as a hung parliament as the conservatives took 331 seats in the 2015 general election. This was their first majority since 1992.

Theresa May hoped to capitalize on the conservative's success by calling a snap election after two years of her majority government term. She inherited this majority from David Cameron but her position seems fragile since she lost the majority. There seems to be questionable fact whether she has adequate support from her own party to make up a government. It's all about the number of the winning party's majority and not a factor of who won.

The Labour MP saw her majority reduced from a high number of 11,439 to 502 votes in 2015 as they have dominated the area for 12 years. In 2015, the born and bred politician, County Durham gained 3,297 votes gain ahead of the Conservatives with just 4,771 votes. Deheena Davison also had 16,143 votes in 2015.

It is predicted that conservatives could have the opportunity of taking the three Labour seats; Darlington, Hartlepool and Middlesborough south and east in the Tee Valley area.